Physics · Oct / Nov 2021 · Paper 11 · Question 32
Two 100 W lamps are connected in parallel to the mains supply, as shown. [circuit diagram: mains supply with switch, two 100 W lamps in parallel] How much electrical energy is supplied by the mains when the switch is closed for 36 minutes?
- A0.030 kW h
- B0.060 kW h
- C0.12 kW h
- D7.2 kW h
As printed in the paper
Show the answer
Correct answer: C. 0.12 kW h
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.